It works on several sites (I've been using it for many days) and it's great that I can block specific parts of pages without having to use another add-on (such as "Element hiding helper"). But, for some reason, even though I'm subscribed to several lists it doesn't block a SINGLE THING on http://brittanica.com/ (This is probably true for other sites as well.)

Even if I create special rules to block the ads, I re-load the page once or twice and new ads are displayed.

This is very annoying, this not "non-instrusive" advertising (and I have that setting unchecked, by the way) we're talking about ads with moving images and lots of blinking non-sense, right next to the article.

Adblock Plus allowed me to use the Encyclopedia Britannica site without any disturbances.

uninstalling resolved the issue. For ad-free browsing there is opera.

I just got this yesterday, and am still getting ads. Wha's up, dude?

good

This is useful in what it does, but at times it pulls more than the actual browser.

This is a big issue in performance. Not currently worth using due to lag.

After last update of firefox everything is slow because of adblock. if you turn it off. Then firefox works just fine. Repair it please.

Works ok on pc but cant cofig on tablet